Clinic — Symptom Checker Wizard

:root {
  --teal: #129c93;
  --teal-d: #0c7a73;
  --teal-700: #0a655f;
  --teal-50: #e7f5f3;
  --coral: #ff7a66;
  --coral-soft: #ffe6df;
  --ink: #16322f;
  --ink-2: #3a534f;
  --muted: #6b827e;
  --bg: #f1f7f6;
  --white: #ffffff;
  --line: rgba(16, 50, 47, 0.1);
  --line-2: rgba(16, 50, 47, 0.18);
  --ok: #2f9e6f;
  --warn: #d98a2b;
  --pending: #6b7280;
  --danger: #d4503e;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --shadow-1: 0 1px 2px rgba(16, 50, 47, 0.05), 0 4px 14px rgba(16, 50, 47, 0.06);
  --shadow-2: 0 16px 40px rgba(12, 122, 115, 0.16);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

/* ── App bar ── */
.appbar {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(150deg, var(--teal), var(--teal-d));
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
}
.brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-name em {
  font-style: normal;
  color: var(--teal-d);
}
.appbar-tag {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal-d);
  background: var(--teal-50);
  border-radius: 999px;
  padding: 6px 12px;
}

/* ── Layout ── */
.wizard {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 24px 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Progress ── */
.progress {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.progress-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.progress-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal-d);
}
.progress-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-2);
}
.progress-track {
  height: 8px;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--line);
  overflow: hidden;
}
.progress-fill {
  display: block;
  height: 100%;
  width: 25%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--teal), var(--teal-d));
  transition: width 0.35s ease;
}

/* ── Card ── */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px 26px 20px;
  box-shadow: var(--shadow-1);
}

/* ── Steps ── */
.step {
  border: none;
  display: none;
}
.step.is-active {
  display: block;
  animation: rise 0.3s ease;
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.step-h {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.step-sub {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 4px 0 18px;
}

/* ── Step 1 — Body area ── */
.area-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.area-card {
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ink);
  cursor: pointer;
  transition: transform 0.14s, box-shadow 0.14s, border-color 0.14s, background 0.14s;
}
.area-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
  border-color: var(--teal);
}
.area-card[aria-checked="true"] {
  border-color: var(--teal);
  background: var(--teal-50);
  color: var(--teal-700);
}
.area-ic {
  font-size: 1.6rem;
  line-height: 1;
}

/* ── Step 2 — Symptom chips ── */
.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color 0.14s, background 0.14s, color 0.14s;
}
.chip:hover {
  border-color: var(--teal);
}
.chip input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.chip:has(input:checked) {
  border-color: var(--teal);
  background: var(--teal-50);
  color: var(--teal-700);
  font-weight: 600;
}
.chip:has(input:focus-visible) {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ── Step 3 — Duration & severity ── */
.field {
  margin-bottom: 22px;
}
.field:last-child {
  margin-bottom: 0;
}
.field-label {
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  margin-bottom: 12px;
}
.radio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.radio {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  padding: 12px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.14s, background 0.14s;
}
.radio:hover {
  border-color: var(--teal);
}
.radio input {
  accent-color: var(--teal-d);
  width: 16px;
  height: 16px;
}
.radio:has(input:checked) {
  border-color: var(--teal);
  background: var(--teal-50);
  color: var(--teal-700);
  font-weight: 600;
}
.sev-value {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 26px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--teal-d);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  margin-left: 6px;
  vertical-align: middle;
}
.sev-of {
  color: var(--muted);
  font-weight: 600;
  margin-left: 4px;
}
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--teal-50);
  outline: none;
  margin: 6px 0 8px;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--teal-d);
  border: 3px solid var(--white);
  box-shadow: var(--shadow-1);
  cursor: pointer;
}
.slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--teal-d);
  border: 3px solid var(--white);
  box-shadow: var(--shadow-1);
  cursor: pointer;
}
.slider-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--muted);
  font-weight: 500;
}

/* ── Step 4 — Result ── */
.result {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.result-banner {
  border-radius: var(--r-md);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 5px solid var(--pending);
  background: rgba(107, 114, 128, 0.1);
}
.result-banner.level-danger {
  border-left-color: var(--danger);
  background: rgba(212, 80, 62, 0.1);
}
.result-banner.level-warn {
  border-left-color: var(--warn);
  background: rgba(217, 138, 43, 0.12);
}
.result-banner.level-ok {
  border-left-color: var(--ok);
  background: rgba(47, 158, 111, 0.12);
}
.rb-level {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.level-danger .rb-level {
  color: var(--danger);
}
.level-warn .rb-level {
  color: var(--warn);
}
.level-ok .rb-level {
  color: var(--ok);
}
.rb-rec {
  font-size: 0.94rem;
  color: var(--ink-2);
}
.next-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.next-steps li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--ink-2);
}
.next-steps li::before {
  content: "✓";
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--teal-50);
  color: var(--teal-d);
  font-size: 0.78rem;
  font-weight: 800;
  margin-top: 1px;
}
.disclaimer {
  background: var(--coral-soft);
  border: 1px solid rgba(255, 122, 102, 0.4);
  border-radius: var(--r-md);
  padding: 14px 16px;
  font-size: 0.86rem;
  color: var(--ink-2);
  line-height: 1.55;
}
.disclaimer strong {
  color: var(--danger);
}

/* ── Buttons ── */
.btn {
  border: none;
  border-radius: 11px;
  padding: 11px 22px;
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.12s, background 0.15s, opacity 0.15s;
}
.btn:active {
  transform: translateY(1px);
}
.btn.primary {
  background: var(--coral);
  color: #fff;
}
.btn.primary:hover {
  background: #ff8e7c;
}
.btn.primary:disabled {
  background: var(--line-2);
  color: var(--muted);
  cursor: default;
}
.btn.ghost {
  background: var(--white);
  border: 1px solid var(--line-2);
  color: var(--ink-2);
}
.btn.ghost:hover {
  background: var(--teal-50);
  border-color: var(--teal);
}
.btn.block {
  width: 100%;
}

/* ── Nav ── */
.nav {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.nav-hint {
  flex: 1;
  font-size: 0.82rem;
  color: var(--danger);
  font-weight: 500;
  text-align: center;
  min-height: 1em;
}
#nextBtn {
  margin-left: auto;
}

@media (max-width: 560px) {
  .area-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .radio-grid {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 20px 18px 16px;
  }
}

// ── State ────────────────────────────────────────────────────────────────────
const TOTAL_STEPS = 4;
const STEP_NAMES = ["Body area", "Symptoms", "Duration & severity", "Result"];
const state = {
  step: 1,
  area: null,
  symptoms: [],
  duration: "<24h",
  severity: 5,
};

const form = document.getElementById("wizardForm");
const steps = [...form.querySelectorAll(".step")];
const stepLabel = document.getElementById("stepLabel");
const stepName = document.getElementById("stepName");
const progressBar = document.getElementById("progressBar");
const progressFill = document.getElementById("progressFill");
const backBtn = document.getElementById("backBtn");
const nextBtn = document.getElementById("nextBtn");
const restartBtn = document.getElementById("restartBtn");
const navHint = document.getElementById("navHint");

// ── Render the current step ──────────────────────────────────────────────────
function render() {
  steps.forEach((s) => s.classList.toggle("is-active", Number(s.dataset.step) === state.step));
  stepLabel.textContent = `Step ${state.step} of ${TOTAL_STEPS}`;
  stepName.textContent = STEP_NAMES[state.step - 1];
  progressFill.style.width = `${(state.step / TOTAL_STEPS) * 100}%`;
  progressBar.setAttribute("aria-valuenow", String(state.step));
  navHint.textContent = "";

  const onResult = state.step === TOTAL_STEPS;
  backBtn.hidden = state.step === 1 || onResult;
  nextBtn.hidden = onResult;
  restartBtn.hidden = !onResult;
  nextBtn.textContent = state.step === TOTAL_STEPS - 1 ? "See result" : "Next";
}

// ── Validation gating ────────────────────────────────────────────────────────
function validateStep() {
  if (state.step === 1 && !state.area) {
    return "Please choose a body area to continue.";
  }
  if (state.step === 2 && state.symptoms.length === 0) {
    return "Please select at least one symptom.";
  }
  return "";
}

// ── Deterministic illustrative triage ────────────────────────────────────────
function computeTriage() {
  const hasUrgentSymptom = state.symptoms.includes("Shortness of breath");
  const chestPain = state.area === "Chest" && state.symptoms.includes("Pain");
  const longDuration = state.duration === "4-7 days" || state.duration === ">1 week";

  if (hasUrgentSymptom || chestPain || state.severity >= 8) {
    return {
      key: "danger",
      level: "Seek urgent care",
      rec: "Your answers suggest symptoms that should be assessed promptly by a clinician.",
      steps: [
        "Contact urgent care or your clinic today.",
        "If breathing is difficult or pain is severe, call your local emergency number.",
        "Have someone stay with you if you feel unwell.",
      ],
    };
  }

  if (state.severity >= 5 || longDuration || state.symptoms.length >= 3) {
    return {
      key: "warn",
      level: "Book a GP appointment soon",
      rec: "Your symptoms are worth a professional review within the next day or two.",
      steps: [
        "Book a routine appointment with your GP.",
        "Note when symptoms started and what makes them better or worse.",
        "Rest, stay hydrated, and monitor for any new symptoms.",
      ],
    };
  }

  return {
    key: "ok",
    level: "Self-care & monitor",
    rec: "Your symptoms appear mild. Home care and observation are reasonable for now.",
    steps: [
      "Rest and keep up your fluids.",
      "Use over-the-counter relief as appropriate.",
      "Check back in if symptoms worsen or last beyond a few days.",
    ],
  };
}

function renderResult() {
  const t = computeTriage();
  const banner = document.getElementById("resultBanner");
  banner.className = `result-banner level-${t.key}`;
  document.getElementById("rbLevel").textContent = t.level;
  document.getElementById("rbRec").textContent = t.rec;

  const list = document.getElementById("nextSteps");
  list.innerHTML = "";
  for (const step of t.steps) {
    const li = document.createElement("li");
    li.textContent = step;
    list.appendChild(li);
  }
}

// ── Step 1 — body area (single select) ───────────────────────────────────────
document.getElementById("areaGrid").addEventListener("click", (e) => {
  const card = e.target.closest(".area-card");
  if (!card) return;
  state.area = card.dataset.area;
  for (const c of card.parentElement.children) {
    c.setAttribute("aria-checked", String(c === card));
  }
  navHint.textContent = "";
});

// ── Step 2 — symptoms (multi select) ─────────────────────────────────────────
document.getElementById("symptomGrid").addEventListener("change", () => {
  state.symptoms = [...form.querySelectorAll('input[name="symptom"]:checked')].map((i) => i.value);
  if (state.symptoms.length > 0) navHint.textContent = "";
});

// ── Step 3 — duration & severity ─────────────────────────────────────────────
document.getElementById("durationGrid").addEventListener("change", (e) => {
  state.duration = e.target.value;
});
const severity = document.getElementById("severity");
const sevValue = document.getElementById("sevValue");
severity.addEventListener("input", () => {
  state.severity = Number(severity.value);
  sevValue.textContent = severity.value;
});

// ── Navigation ───────────────────────────────────────────────────────────────
nextBtn.addEventListener("click", () => {
  const error = validateStep();
  if (error) {
    navHint.textContent = error;
    return;
  }
  if (state.step === TOTAL_STEPS - 1) renderResult();
  state.step = Math.min(state.step + 1, TOTAL_STEPS);
  render();
});

backBtn.addEventListener("click", () => {
  state.step = Math.max(state.step - 1, 1);
  render();
});

document.getElementById("bookBtn").addEventListener("click", () => {
  document.getElementById("bookBtn").textContent = "Appointment requested ✓";
  document.getElementById("bookBtn").disabled = true;
});

restartBtn.addEventListener("click", () => {
  form.reset();
  state.step = 1;
  state.area = null;
  state.symptoms = [];
  state.duration = "<24h";
  state.severity = 5;
  sevValue.textContent = "5";
  for (const c of document.getElementById("areaGrid").children) {
    c.setAttribute("aria-checked", "false");
  }
  const bookBtn = document.getElementById("bookBtn");
  bookBtn.textContent = "Book an appointment";
  bookBtn.disabled = false;
  render();
});

render();

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      rel="stylesheet"
      href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap"
    />
    <link rel="stylesheet" href="style.css" />
    <title>Symptom Checker · Northbridge Clinic</title>
  </head>
  <body>
    <header class="appbar">
      <a class="brand" href="#">
        <span class="brand-mark" aria-hidden="true">✚</span>
        <span class="brand-name">Northbridge <em>Health</em></span>
      </a>
      <span class="appbar-tag">Symptom checker</span>
    </header>

    <main class="wizard">
      <div class="progress">
        <div class="progress-row">
          <p class="progress-label" id="stepLabel">Step 1 of 4</p>
          <p class="progress-name" id="stepName">Body area</p>
        </div>
        <div
          class="progress-track"
          role="progressbar"
          aria-valuemin="1"
          aria-valuemax="4"
          aria-valuenow="1"
          id="progressBar"
        >
          <span class="progress-fill" id="progressFill"></span>
        </div>
      </div>

      <form class="card" id="wizardForm">
        <!-- Step 1 — Body area -->
        <fieldset class="step is-active" data-step="1">
          <legend class="step-h">Where are your symptoms?</legend>
          <p class="step-sub">Pick the area that fits best.</p>
          <div class="area-grid" id="areaGrid" role="radiogroup" aria-label="Body area">
            <button type="button" class="area-card" data-area="Head" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🧠</span><span>Head</span>
            </button>
            <button type="button" class="area-card" data-area="Chest" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🫁</span><span>Chest</span>
            </button>
            <button type="button" class="area-card" data-area="Abdomen" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🩺</span><span>Abdomen</span>
            </button>
            <button type="button" class="area-card" data-area="Back" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🧍</span><span>Back</span>
            </button>
            <button type="button" class="area-card" data-area="Limbs" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🦵</span><span>Limbs</span>
            </button>
            <button type="button" class="area-card" data-area="Skin" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🩹</span><span>Skin</span>
            </button>
            <button type="button" class="area-card" data-area="General" role="radio" aria-checked="false">
              <span class="area-ic" aria-hidden="true">🌡️</span><span>General</span>
            </button>
          </div>
        </fieldset>

        <!-- Step 2 — Symptoms -->
        <fieldset class="step" data-step="2">
          <legend class="step-h">What are you feeling?</legend>
          <p class="step-sub">Select all that apply — at least one.</p>
          <div class="chip-grid" id="symptomGrid">
            <label class="chip"><input type="checkbox" name="symptom" value="Fever" /><span>Fever</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Cough" /><span>Cough</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Headache" /><span>Headache</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Fatigue" /><span>Fatigue</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Nausea" /><span>Nausea</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Shortness of breath" /><span>Shortness of breath</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Pain" /><span>Pain</span></label>
            <label class="chip"><input type="checkbox" name="symptom" value="Dizziness" /><span>Dizziness</span></label>
          </div>
        </fieldset>

        <!-- Step 3 — Duration & severity -->
        <fieldset class="step" data-step="3">
          <legend class="step-h">How long and how bad?</legend>
          <p class="step-sub">This helps shape the guidance.</p>
          <div class="field">
            <p class="field-label">Duration</p>
            <div class="radio-grid" id="durationGrid">
              <label class="radio"><input type="radio" name="duration" value="<24h" checked /><span>Less than 24h</span></label>
              <label class="radio"><input type="radio" name="duration" value="1-3 days" /><span>1–3 days</span></label>
              <label class="radio"><input type="radio" name="duration" value="4-7 days" /><span>4–7 days</span></label>
              <label class="radio"><input type="radio" name="duration" value=">1 week" /><span>More than a week</span></label>
            </div>
          </div>
          <div class="field">
            <p class="field-label">
              Severity <span class="sev-value" id="sevValue">5</span><span class="sev-of">/ 10</span>
            </p>
            <input
              type="range"
              min="1"
              max="10"
              value="5"
              class="slider"
              id="severity"
              aria-label="Severity from 1 to 10"
            />
            <div class="slider-scale"><span>Mild</span><span>Moderate</span><span>Severe</span></div>
          </div>
        </fieldset>

        <!-- Step 4 — Result -->
        <fieldset class="step" data-step="4">
          <legend class="step-h">Your illustrative result</legend>
          <div class="result" id="result" role="status" aria-live="polite">
            <div class="result-banner" id="resultBanner">
              <span class="rb-level" id="rbLevel">—</span>
              <span class="rb-rec" id="rbRec"></span>
            </div>
            <ul class="next-steps" id="nextSteps"></ul>
            <div class="disclaimer" role="note">
              <strong>This is not a diagnosis.</strong> This tool is illustrative only and cannot
              assess your health. If you feel unwell, contact a healthcare professional. In an
              emergency, call your local emergency number.
            </div>
            <button type="button" class="btn primary block" id="bookBtn">Book an appointment</button>
          </div>
        </fieldset>

        <!-- Nav -->
        <div class="nav">
          <button type="button" class="btn ghost" id="backBtn" hidden>Back</button>
          <p class="nav-hint" id="navHint" role="status" aria-live="polite"></p>
          <button type="button" class="btn primary" id="nextBtn">Next</button>
          <button type="button" class="btn ghost" id="restartBtn" hidden>Start over</button>
        </div>
      </form>
    </main>

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